Heat-activated color changing cat mug that reveals a vibrant cat design when hot liquid is added. Smooth ceramic construction for everyday use. Eye-catching black finish that transitions to a colorful cat image. Great gift for cat lovers and fun to use daily. This is a heat-activated, color-changing ceramic mug that reveals a vibrant cat design when filled with hot liquid. Product Details * Type: Heat-sensitive magic coffee or tea mug. * Effect: Appears solid black when cold, but displays a colorful, glowing cat illustration as hot liquid is added. * Material: Standard ceramic construction.